http://projectsreports.org/IEEE 802.11 is a media access control and physical layer to implement wireless local area network.This is created by an Institute of Electrical and Electronics Engineers (IEEE).It evolved from 1 Mbps to 54 Mbps from 1997 to 2003 respectively.There are other LAN technologies like Bluetooth and hiperLAN.Amandemts take place many times to the standardbut every amendment became standard.802.11 uses 2.4GHz and 5 GHZ bands these bandwidth divided into 14 channels like any other band spectrum.The information element is part of management frames in the IEEE 802.11 WLAN there are seven IEs in each frame.802.11 WLAN has an interference from microwaves ovens and Bluetooth.